but i have an answer for you, NO.
There's nothing you can do, not in a million years can you do anythying programmatically to get rid of that scroll bar. This is simply cause it's coded into the program, you can't just go and edit the bits of command.com (or in this case i think it's cmd.exe, you're running xp right??)
....well technically you COULD do it with a disassembler, but you'd need to know ASM, plus it's illegal.
anyhow, no, you can't do it.